公开(公告)号：US11813942B2

公开(公告)日：2023-11-14

申请号：US17574475

申请日：2022-01-12

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Shuaijie Wang ,  Yuan Zhou ,  Bucheng Ji

IPC: H02P6/14 ,  B60L15/08 ,  B60L50/60 ,  B60L50/40 ,  H02M1/00 ,  B60L3/00 ,  H02M3/158 ,  H02P27/08

CPC classification number: B60L15/08 ,  B60L3/0092 ,  B60L50/40 ,  B60L50/66 ,  H02M1/008 ,  H02M3/1582 ,  H02P27/08 ,  B60L2210/12

Abstract: A motor control system and a vehicle reliably perform a three-phase active short circuit on a motor when a single-point power source fails. The motor control system includes a bus capacitor and a motor. The motor is connected to a positive direct current bus and a negative direct current bus through three phases of inverter bridges, the positive direct current bus and the negative direct current bus are respectively connected to a positive terminal and a negative terminal of the bus capacitor, and each phase of inverter bridge includes an upper bridge arm connected to the positive direct current bus and a lower bridge arm connected to the negative direct current bus. In addition, the motor control system further includes: an upper gate drive circuit, a lower gate drive circuit, a first power supply unit, and a second power supply unit.